Struct NixpkgsBridge 

pub struct NixpkgsBridge {
    pub pkg_set: Option<String>,
    pub known_names: Vec<String>,
    pub label: String,
}

Bridges a list of names through to an existing Nix expression universe. By default that’s import <nixpkgs> {}, but any expression that yields an attribute set will do (flake revisions, release.nix, a private overlay).

Fields

pkg_set: Option<String>

Nix expression evaluating to the attribute root. Default: "import <nixpkgs> {}".

known_names: Vec<String>

Names this bridge claims to know. Empty list = “open universe” — any name resolves. Non-empty list = closed universe (used for mirror gen).

label: String

Human label for logs.

Implementations

impl NixpkgsBridge

pub fn new() -> Self

pub fn with_pkg_set(self, expr: impl Into<String>) -> Self

pub fn with_names(self, names: Vec<String>) -> Self

pub fn with_label(self, label: impl Into<String>) -> Self

pub fn derivation(&self, attr_path: impl Into<String>) -> Derivation

Build a Derivation for a name without consulting known_names. Useful when you’re sure the attr exists upstream.

Trait Implementations

impl Default for NixpkgsBridge

fn default() -> Self

Returns the “default value” for a type.

impl PackageSet for NixpkgsBridge

fn get(&self, name: &str) -> Result<PackageLookup, PackageSetError>

Retrieve the derivation for a named package. None if not present.

fn names(&self) -> Vec<String>

Short list of package names this set knows about. May be a finite enumeration (LispPackageSet) or a caller-provided seed (NixpkgsBridge doesn’t enumerate nixpkgs by default — too large).

fn label(&self) -> &str

Optional provenance label for logging / error messages.